MERV 11 Filters | McMaster-Carr

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System of Measurement

Inch

Thickness

12"

HVAC Filter Trade Size

MERV Filter Rating

Filter Type

Frame Material

For Removing

Material

Air Filter Performance

Application

Filter Efficiency

Maximum Temperature

Filter Efficiency @ 1 Microns

65%

Construction

Pleated

Filter Efficiency @ 0.3 Microns

20%

Reusable

Filter Efficiency @ 3 Microns

85%

Removes Particle Size Down To

Less than 100 μm

Filtering Method

Fiber

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

REACH

RoHS

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

For Use With

Specifications Met

115 Products

About Air Filter Efficiency Ratings

Compare MERV rating, efficiency, and particle size to find the right filter for your location—from warehouses and offices to hospitals and labs.

Filter Type

Panel

Install as standalone filters or as prefilters

107 products

Box

The rigid frame withstands changes in airflow

8 products

Performance

Long Life

Extend time between filter changes

15 products

High Temperature

Endure high temperatures without breaking down

2 products

High-Efficiency Pleated Panel Air Filters

Trap common allergens such as dander, mold spores, and pollen. These filters balance filtration efficiency and airflow, making them more cost-effective than higher-rated filters.

					Small Pack			Large Pack
	HVAC Filter Trade Size	MERV Filter Rating	Max. Temp., ° F	Specs. Met	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
1" Thick



		10 × 10	11	150	UL 900	2	3881T203	000000	12	3881T204	000000


		10 × 20	11	150	UL 900	2	3881T205	00000	12	3881T206	000000
		12 × 12	11	150	UL 900	2	3881T207	00000	12	3881T208	00000
		12 × 16	11	150	UL 900	2	3881T209	00000	12	3881T211	000000
		12 × 20	11	150	UL 900	2	3881T212	00000	12	3881T213	000000
		12 × 24	11	150	UL 900	2	3881T41	00000	12	3881T2	00000
		14 × 25	11	150	UL 900	2	3881T42	00000	12	3881T3	000000
		15 × 20	11	150	UL 900	2	3881T43	00000	12	3881T4	000000
		16 × 16	11	150	UL 900	2	3881T214	00000	12	3881T215	000000
		16 × 20	11	150	UL 900	2	3881T44	00000	12	3881T5	00000
		16 × 25	11	150	UL 900	2	3881T45	00000	12	3881T6	000000


		16 × 30	11	150	UL 900	2	3881T216	00000	12	3881T217	000000
		18 × 18	11	150	UL 900	2	3881T218	00000	12	3881T219	000000
		18 × 24	11	150	UL 900	2	3881T46	00000	12	3881T7	000000
		20 × 20	11	150	UL 900	2	3881T51	00000	12	3881T8	000000
		20 × 24	11	150	UL 900	2	3881T52	00000	12	3881T9	000000
		20 × 25	11	150	UL 900	2	3881T56	00000	12	3881T11	000000
		20 × 30	11	150	UL 900	2	3881T221	00000	12	3881T222	000000
		24 × 24	11	150	UL 900	2	3881T57	00000	12	3881T13	000000


		2" Thick



				10 × 10	11	150	UL 900	2	3881T223	00000	12	3881T224	000000


				12 × 12	11	150	UL 900	2	3881T225	00000	12	3881T226	00000
				12 × 16	11	150	UL 900	2	3881T227	00000	12	3881T228	000000
				12 × 20	11	150	UL 900	2	3881T229	00000	12	3881T231	000000
				12 × 24	11	150	UL 900	2	3881T61	00000	12	3881T15	00000
				14 × 25	11	150	UL 900	2	3881T62	00000	12	3881T16	000000
				15 × 20	11	150	UL 900	2	3881T63	00000	12	3881T17	000000
				16 × 16	11	150	UL 900	2	3881T232	00000	12	3881T233	00000
				16 × 20	11	150	UL 900	2	3881T64	00000	12	3881T18	000000
				16 × 24	11	150	UL 900	2	3881T65	00000	12	3881T19	000000
				16 × 25	11	150	UL 900	2	3881T234	00000	12	3881T235	000000


				18 × 18	11	150	UL 900	2	3881T236	00000	12	3881T237	000000
				18 × 24	11	150	UL 900	2	3881T66	00000	12	3881T21	000000
				20 × 20	11	150	UL 900	2	3881T67	00000	12	3881T22	000000
				20 × 24	11	150	UL 900	2	3881T68	00000	12	3881T23	000000
				20 × 25	11	150	UL 900	2	3881T69	00000	12	3881T24	000000
				20 × 30	11	150	UL 900	2	3881T238	00000	12	3881T239	000000
				24 × 24	11	150	UL 900	2	3881T71	00000	12	3881T25	000000


				4" Thick



						12 × 24	11	150	UL 900	2	3881T241	00000	6	3881T242	000000


						14 × 25	11	150	UL 900	2	3881T243	00000	6	3881T244	000000
16 × 20						11	150	UL 900	2	3881T245	00000	6	3881T246	000000
16 × 25	11					150	UL 900	2	3881T73	00000	6	3881T27	000000
18 × 24	11					150	UL 900	2	3881T247	00000	6	3881T248	000000
20 × 20	11					150	UL 900	2	3881T74	00000	6	3881T28	000000
20 × 24	11					150	UL 900	2	3881T75	00000	6	3881T29	000000
20 × 25	11					150	UL 900	2	3881T76	00000	6	3881T31	000000
24 × 24	11					150	UL 900	2	3881T77	00000	6	3881T32	000000

Long-Life High-Efficiency Pleated Panel Air Filters

Tight pleats create a larger surface area than standard pleats for a longer life. These filters trap common allergens such as dander, mold spores, and pollen. High-efficiency filters also balance filtration efficiency and airflow, making them more cost-effective than higher-rated filters. Use them in data centers and other locations that require extra-clean air.

	MERV Filter Rating	Max. Temp., ° F		Each
2" Thick



	12 × 24	11	175	5437N11	000000


	16 × 20	11	175	5437N12	00000
	16 × 25	11	175	5437N13	00000
	18 × 24	11	175	5437N14	00000
	20 × 20	11	175	5437N15	00000
	20 × 24	11	175	5437N16	00000
	20 × 25	11	175	5437N17	00000
	24 × 24	11	175	5437N18	00000


	4" Thick



			12 × 24	11	175	5437N19	00000


			16 × 20	11	175	5437N21	00000
			16 × 25	11	175	5437N22	00000
			20 × 20	11	175	5437N23	00000
			20 × 24	11	175	5437N24	000000
			20 × 25	11	175	5437N25	000000
			24 × 24	11	175	5437N26	000000

High-Efficiency Box Air Filters

Breathe easier with filters that trap common allergens, such as dander, mold spores, and pollen. They're also designed to handle airflow fluctuations, like those in variable air volume systems. Often used in data centers and other environments needing extra-clean air, these filters balance efficiency and airflow—making them more cost-effective than higher-rated options.

	MERV Filter Rating	Max. Temp., ° F	Specs. Met		Each
6" Thick



	12 × 24	11	180	UL 900	8231T15	0000000


	20 × 24	11	180	UL 900	8231T16	000000
	24 × 24	11	180	UL 900	8231T14	000000


	12" Thick



			12 × 24	11	180	UL 900	8231T12	000000


			20 × 24	11	180	UL 900	8231T13	000000
			24 × 24	11	180	UL 900	8231T11	000000

High-Temperature High-Efficiency Box Air Filters

Handle the heat while capturing common allergens, such as dander, mold spores, and pollen. These filters won't break down in temperatures up to 900°F, and they can also withstand airflow fluctuations, like those in variable air volume systems. High-efficiency filters like these balance filtration efficiency and airflow, making them more cost-effective than higher-rated filters.

	MERV Filter Rating	Max. Temp., ° F	Specs. Met		Each
12" Thick



	12 × 24	11	900	UL 900	8231T45	0000000


	24 × 24	11	900	UL 900	8231T44	000000